Hinge.



UNITED STATES PATENT OFFICE.

FREDRIGK F. TRYON, OF SYRAOUSE, NEW-YORK.

HINGE.

SPECIFICATION forming part of Letters Patent N o. 712,219, dated October28, 1.902.

Application filed March 5, 1901.

To all? Lvl/1,0112. t may concern/f Be it known that I, FREDRIOK F.TRYoN, of Syracuse, in the county of Onondaga, in the State ot'v NewYork, have invented new and useful Improvements in Hinges, of which thefollowing, taken in connection with the accompanying drawings, is afull, clear, and exact description.

My invention relates to a concealed hinge, whose essential featuresare'a link pivotally connected both to the jarnb and to the door atadjacent sides of corresponding mortises in each, and a locking-pieceadapted to engage first with the ydoor portion of the hinge, so that thedoor as it is opened will first swing on the jambjournal withoutchanging its relation to the link and without swinging on thedoor-journal until it has reached the halfopen position at right anglesto the jamb or wall. At this position the locking-piece is arranged todisengage from the door portion and the door is then swung back intowideopen position on the door-journal. When the door is closed, theoperation is reversed. This mode of operation and result may be4veffected by various mechanisms, and I do not "propose to limit myselfto the form here shown; but I have illustrated a simple and economicalform of hinge for producing this result, in which corresponding segmentsor quadrants are arranged in both mortises and secured, if desired, onthe respective hingeplates in the base of each niortise. The doorsogmenthas a notch in its upper end and the jamb-segment in its lower end.A'lockingpiece is pivotally carried at its middle in the slot in the.hinge-piece, so that its bent or hooked ends engage with said notches.The function ofthe door-segment notchis to receive the outer end of thelocking-piece,'per mitting the disengagement of the other end of thelocking-piece from the jamb-segment notch, so that the door will swingon the jambjournal. The function of the jamb-segnient notch is toreceive at the proper time the opposite hooked end of the locking-piece,per- V mitting the door automatically to unlock fro m the link and toswing on the door-journal, while at the same time the link is locked tothe jamb, so the door cannot swing on the jamb-journal, thus insuring aproper movejarnb-plate 5 by jamb-journal 12 ment in the opening andclosing of the door Serial No.` 49,767. (No model.)

and permitting it to swing on onlyone journal at a timeon thejamb-journal-when it is being swung from closed to half-open position,land Vice versa, and on the door-journal when it is being swung from halfto full open position, and Vice versa.

My invention is shown in the accompanying drawings, in which the samereference-numerals used in tho specification indicate the same parts inall of the figures.

Figures I, II, and III are cross-sections on line I I of Fig. IV ofjarnb, door, and hinge in first, second, and third positions, showing,respectively, the door closed, half open, and full or wide open. Fig. IVis a top plan view of my invention with the door wide open. Fig. V is across-section of Fig. IV on line V V.

In the figures, l indicates the jamb, and 2 the door, both formed withcorresponding mortises 3 and 4.. In the base ofthe mortises are secured,respectively, the jamb hingeplate 5 and the door hinge-plate 6, on whichmaybe secured, respectively, the jamb-segment 7 and door-segment 8,notched, respectively, at their upper and lower ends, the jamb-segmentat 9 and the door-segment at IO. The link 11, bent, preferably, twice atright angles, as here shown, so that the door may be journaled to thejamb at or near the bottom of both mortises, is connected to the and tothe door-plate 6 by jamb-journal 13. This link is formed with slot ll'ofa width sufficient to admit freely the segments, and at about itscentral axis is journaled in this slot by pin 15 the locking-lever orlocking-piece 16, having hooked ends at 17 and 18 to engage,respectively, with jamb notch 9 and doornotch 10.

As shown in Fig. I, the end 180i the lock` IOO The adjacent edges of thedoor and jamb are preferably curved at 2O and 2l to insure a closer fit,permitting the door to swing into place when closed, and vice versa.

My hinge is of few parts, is very simple and economical to make, isentirely concealed in the mortise, is durable, and may be as strong asdesired and adapted to very light doors, as those of cupboards or boxes,or to the heaviest, and because the journals 12 and 13 are arrangedwithin the edge of the door and jamb the radius on which it swings isgreater and the door, as shown in Fig. II in the half-open position, isWider open by the thickness of the door than in the case where commonhinges are used.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. In hinge mechanism for a door, the combination with the door and thejamb correspondingly mortised on their adjacent edges, of a U-shapedlink hinged by one leg in the base of the door-mortise and by the otherleg in the base of the jamb-mortise, the hinge connections being onadjacent sides of the door and jamb mortises, a supplementarylocking-piece carried on the link and adapted to engage with the doorand lock it to the link, so that the door swings on the jambhinge duringthe first half of its swing, and then adapted to engage with the jamband lock the link thereto so that the door swings on the door-hingeduring the second half of its swing.

2. In a concealed hinge, the combination of a link journaled to the doorand to the doorsupport with a locking-piece pivotally supported on thelink, and means to effect engagernent of the locking-piece with the doorwhile the door is swinging from closed to halfopen position, and meansfor releasing the locking-piece from the door and locking it to thesupport while the door is being swung from half-open to open position.

3. Ina concealed hinge, the combination of a link journaled to the doorand to the jamb and having a cross-slot, of a locking-piece pivotallysupported on the link in the slot and having hooked ends, a segmentsecured to the janib and notched at its lower end, and a second segmentsecured to the door and notched at its upper end, for engagement withthe hooked ends respectively of said locking-piece, substantially asshown and described.

4. A door and door-jamb formed with corresponding mortises and aconcealed hinge therefor, having in combination hinge-plates secured inthe bottom of each mortise, a substantially U-shaped link hinged by itsrespective legs to said hinge-plates, said link being formed with acontinuous slot at right angles to the door and extending from onehinge-bearing to the other, a locking-piece, having hookcdnends,pivotally supported in said slot at the center of the link, a segmentsecured on the jamb hinge-plate to extend through said slot and notchedat its upper end, and a segment secured on the door hinge-plate toextend through said slot and notched at its lower` end, saidlocking-piece engaging with the door-segment notch during the rst halfof the swing and with the jamb-segment notch during the second half ofthe swing.

In testimony whereof I have hereunto signed my name.

FREDRICK F. TRYON. [L s] Witnesses:

NELLIE E. M. TRYON, FRANK H. TRYoN.

